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Segment information - Geographic information (Details) - ARS ($) $ in Millions | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Geographic information |  |  |
Total revenues and other income | $ 65,319 | $ 53,323 | $ 40,540
Total non-current assets Breakdown by location of operations | 39,350 | 32,352 | 26,973
By location of operations |  |  |
Geographic information |  |  |
Total revenues and other income | 65,319 | 53,323 | 40,540
Total non-current assets Breakdown by location of operations | 39,350 |  |
By location of customer |  |  |
Geographic information |  |  |
Total revenues and other income | 65,319 | 53,323 | 40,540
Argentina |  |  |
Geographic information |  |  |
Total non-current assets Breakdown by location of operations |  | 29,832 | 24,844
Argentina | By location of operations |  |  |
Geographic information |  |  |
Total revenues and other income | 62,012 | 50,406 | 38,677
Total non-current assets Breakdown by location of operations | 36,429 |  |
Argentina | By location of customer |  |  |
Geographic information |  |  |
Total revenues and other income | 61,696 | 49,958 | 38,388
Abroad |  |  |
Geographic information |  |  |
Total non-current assets Breakdown by location of operations |  | 2,520 | 2,129
Abroad | By location of operations |  |  |
Geographic information |  |  |
Total revenues and other income | 3,307 | 2,917 | 1,863
Total non-current assets Breakdown by location of operations | 2,921 |  |
Abroad | By location of customer |  |  |
Geographic information |  |  |
Total revenues and other income | $ 3,623 | $ 3,365 | $ 2,152

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